Carbon Dioxide for Pool pH Control is a practical field guide for pool technicians, aquatic facility operators, consultants, and maintenance professionals responsible for managing commercial swimming pools and spas.For decades, carbon dioxide has been used as an alternative to mineral acids for pH control. Yet the technology remains surrounded by folklore. Operators are told that CO₂ causes runaway total alkalinity, consumes excessive gas, cannot cope with heavy ba...

Why ORP Systems Fail – and How to Stop It is a practical guide to understanding ORP, pH, chlorine, chemistry, hydraulics, and automatic pool control systems in real-world aquatic facilities.For decades, pool operators have been told that ORP is unreliable. Controllers are blamed for unstable readings, overdosing, underdosing, and poor water quality. Yet many of these problems are not caused by the controller at all.They are caused by misunderstanding the sy...

The student will learn that whether God's people receive blessings through obedience or punishment from disobedience, God's glory will prevail in the end.

"Cheating Secrets" has all the information needed for anyone in a relationship that may be suffering from infidelity. Learn what the signs of cheating are and how to identify them, as well as real life stories from individuals who have dealt with cheating. This book talks about how some people heal from the experience of infidelity, the damage it causes, and how to recover from cheating whether you stay in the relationship or not. Sometimes infidelity can wake people up in relationships an...

An electrifying novel about the Nazi who reinvented himself, Albert Speer‘Which is the most seductive, truth or fiction?’This is the story of Albert Speer: The protégé. The ‘good Nazi’. The star. The mythmaker.In 1969 Speer, Hitler’s favourite architect and Minister of Armaments and War Production, publishes his memoirs. Rewriting his own past, claiming to have known nothing about the Final Solution, he declares himself ‘co...

‘A guide to being the best humans we can be for our cats’ Focus'Fascinating. A must for every cat owner' Philippa PerryA trail-blazing guide to feline mental health from a leading veterinary psychiatristIs your cat happy? What can you do to help? And what can cats teach us?The relationship between humans and cats has never been simple. Cats are mysterious and contradictory, independent and ...

The student will grow in appreciation of the love, sacrifice and passion of his Savior, the Lord Jesus Christ.

The student will apply godly wisdom to every facet of his daily life.

ORP controllers can overdose a pool to 30 mg/L of chlorine while showing a perfect reading. This book explains exactly why - and how to stop it happening.Oxidation-Reduction Potential control is one of the most widely installed and least understood technologies in recreational water management. Pool professionals learn to calibrate the equipment. Very few learn how ORP actually behaves inside a real, operating water body - and what it cannot tell you.This b...

CO₂ for Swimming Pool pH Control - Explained ProperlyMost pool operators have heard conflicting things about CO₂ systems.Some call them unreliable. Others say they raise alkalinity. Many simply avoid them.This book cuts through the confusion.This is a practical, field-based guide to understanding, installing, and operating CO₂ systems in real-world swimming pools.Rather than repeating industry folklore, this book explains what actual...

In 1981 amid recession and widespread urban unrest Dave Watson left the building trade to join the West Yorkshire Metropolitan Police. You will be enthralled by his stories which cover every human emotion, from a cancer victim having a breakdown to a young bingo caller falling to his death fleeing a raid from the drugs squad. On the way we meet characters and scenes and events that would be hard to find in the most creative pages of crime fiction: the three pensioners who volunteered to be...

World-renowned curator Hans Ulrich Obrist for the first time grants a private view of his life, and his journey towards art and artistsWhen Hans Ulrich was six years old, he was knocked down by a speeding car as he was crossing the street. Hospitalized for weeks, a sense of urgency was instilled in him. Enraptured by the healing powers of art from this young age, he began to travel across Europe on night trains, visiting artists’ studios.In a book that is p...